Update charted to 0.4.8 and roll

packages/web_components/pubspec.yaml

Index: packages/web_components/pubspec.yaml
diff --git a/packages/web_components/pubspec.yaml b/packages/web_components/pubspec.yaml
index c33321397f0214e83e72ddddcb31e2795f8390fd..b65a6927b8569d0b18bd5145016b9e888c15ce89 100644
--- a/packages/web_components/pubspec.yaml
+++ b/packages/web_components/pubspec.yaml
@@ -1,5 +1,5 @@
 name: web_components
-version: 0.12.3
+version: 0.12.5
 author: Polymer.dart Authors <web-ui-dev@dartlang.org>
 homepage: https://github.com/dart-lang/web-components/
 description: >
@@ -10,10 +10,10 @@ description: >
   elements, by hiding DOM subtrees under shadow roots. HTML Imports let authors
   bundle code and HTML as if they were libraries.
 dependencies:
-  analyzer: '^0.27.0'
+  analyzer: '>=0.27.1 <0.30.0'
   barback: '>=0.14.2 <0.16.0'
-  code_transformers: '>=0.3.0 <0.5.0'
-  html: '^0.12.0'
+  code_transformers: '>=0.3.0 <0.6.0'
+  html: '>=0.12.0 <0.14.0'
   initialize: '^0.6.0'
   path: '^1.3.0'
 dev_dependencies:
@@ -32,6 +32,5 @@ transformers:
       - test/init_web_components_test.html
 - test/pub_serve:
     $include: test/**_test{.*,}.dart
-
 environment:
   sdk: ">=1.9.0-dev.7.1 <2.0.0"